5 Why did bipedalism evolve? to allow foraging on the savannah when the sun is overhead, when quadrupeds have to seek shade (Wheeler, 1984, et seq.) to fulfill the locomotor needs of: scavengers (Shipman, 1986); migratory scavengers following ungulate herds (Sinclair et al., 1986); endurance hunters (Spuhter, 1979) & game stalkers (Merker, 1984) to make the bipedalist appear taller to intimidate predators and antagonists (Jablonski & Chaplin, 1993, Thorpe et al, 2002) because there was prolonged flooding and our ancestors were driven out of the remaining forest and into the sea, where there was an abundance of accessible food (Morgan, 1982 et seq.)

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